We heard it from a guy (thanks, Jeff K!) who heard it from another guy who basically speculated from comments made by two other guys that, surprise surprise, NBC and iTunes are on the road to reconciliation. Ok, so it isn't really a surprise-- the odds are really good that as long as there is NBC and iTunes, they'll eventually end up together. There's been some posturing in their past, but really, both have way more to gain together than apart.
Not to mention that the NBC Direct service never quite panned out correctly. Of course, neither NBC nor iTunes is clearly hurting for one another. But there's so much benefit for both to make a deal that it's not hard to expect them back together by the time new Office episodes get back on the air.